18 September 2026

10 new posts across 4 mobile platform sources — 9 worth your time.

One week of Mobile, 9 stories, as published.

Updates to App Tracking Transparency in the European Union

Apple is introducing changes to its App Tracking Transparency (ATT) framework in the European Union, starting with iOS 27.2 and iPadOS 27.2. Developers will have the option to use an alternative version of the ATT system prompt in the EU, though the requirements for seeking user permission to track remain unchanged.

Why it matters — Developers in the EU must understand and potentially implement the alternative ATT prompt in iOS 27.2 to ensure compliance with regional regulations.

Apple Developer · 18 September 2026 · Read the original →

Store & Policy

Get your subscriptions ready for iOS 27

Developers are encouraged to prepare their subscriptions for new features in iOS 27 by ensuring apps use StoreKit 2 for Apple In-App Purchases. New Bundles and Suites capabilities allow offering multiple subscriptions as a single Apple In-App Purchase.

Why it matters — Adopting StoreKit 2 and new subscription bundling features can expand subscription reach and simplify offerings for users, potentially impacting revenue.

Apple Developer · 18 September 2026 · Read the original →

iOS & Swift

Get ready with the latest beta releases

Apple has released beta versions of iOS 27.2, iPadOS 27.2, macOS 27.2, tvOS 27.2, visionOS 27.2, and watchOS 27.2. Developers should test their apps with these releases and build with Xcode 27.2 to utilize the latest SDK advancements, especially in preparation for iPhone Duo running iOS 27.1.

Why it matters — Developers must test existing apps against new OS betas and SDKs to ensure compatibility and leverage new features, preparing for upcoming device releases.

Apple Developer · 18 September 2026 · Read the original →

iOS & Swift

Swift 6.4 Released

Swift 6.4 has been released, enhancing its support across various platforms including apps, servers, and embedded devices. Key highlights include Swift Build becoming the default in Swift Package Manager for consistent project builds across operating systems, and the Subprocess library reaching version 1.0.

Why it matters — The release of Swift 6.4 brings language and tooling improvements, such as consistent builds via Swift Package Manager, which can streamline development workflows.

Swift.org · 18 September 2026 · Read the original →

Android & Kotlin

Introducing the AndroidX Security State Libraries: A Unified View of Device Security

Android has announced the stable release of the AndroidX Security State version 1.1.0 and Security State Provider version 1.0.0 libraries. These libraries are designed to provide developers and enterprise partners with the necessary data to keep devices protected.

Why it matters — Developers can use these new stable libraries to access unified device security data, potentially simplifying the implementation of security features in their apps.

Android Developers · 18 September 2026 · Read the original →

Tooling

Module Tracking in Swift Debug Info

This post details improvements to Swift debug info, specifically regarding module tracking, which will be included in the upcoming Swift 6.4 release. Changes, begun in Swift 6.3, will enhance the precision of the debugger's expression evaluator in locating the correct Swift module when a program hits a breakpoint.

Why it matters — Improved module tracking in Swift 6.4 will lead to more reliable and precise debugging experiences, making it easier for developers to inspect code and resolve issues.

Swift.org · 18 September 2026 · Read the original →

Tooling

Android Bench 2.0: Pushing the frontier with challenging long-horizon tasks

Android Bench 2.0 has been released, updating the benchmark for evaluating how large language models (LLMs) assist developers with real-world Android tasks. The methodology has been aligned with the Harbor framework to adapt to the rapid evolution of AI models and agents.

Why it matters — This updated benchmark provides a rigorous foundation for assessing the effectiveness of AI tools in assisting Android development, guiding developers in leveraging LLMs.

Android Developers · 18 September 2026 · Read the original →

Store & Policy

Apple Revises EU ATT Prompts

Apple is introducing an alternative App Tracking Transparency system prompt for apps in the EU, starting with iOS 27.2 and iPadOS 27.2. This change, driven by agreements with European competition authorities, modifies the prompt's formatting and language, and makes the alternative version mandatory in Germany, France, Italy, Poland, and Romania. Developers can also re-prompt users one year after their previous ATT choice in the EU.

Why it matters — Developers distributing apps in the EU must adapt to new ATT prompt designs, with a mandatory alternative version in specific countries, and can now re-engage users for consent annually.

9to5mac.com · 18 September 2026 · Read the original →

iOS & Swift

Swift 6.4 Streamlines Development

Swift 6.4 has been released, bringing ergonomic refinements like simplified availability syntax with `anyAppleOS` and finer-grained control over warnings with `@diagnose`. It also adds support for asynchronous code in `defer` statements and extends `for-in` loops to noncopyable types. The release unifies the build system across platforms and improves WebAssembly performance.

Why it matters — Developers can simplify platform availability checks with `anyAppleOS` and ensure cleanup in async functions with `defer`, reducing boilerplate and improving code reliability.

Swift.org · 18 September 2026 · Read the original →

The usual mix of platform evolution and compliance demands.

9 stories, every Friday

Published here every week. Follow by RSS to get it as it lands.

Subscribe by RSS All issues

← Previous issue